package com.lagou.edu.utils;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import java.util.Date;
import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

@RefreshScope
@Component
public class MailTool {
    //发件人地址
    @Value("${email.sender.address}")
    public String senderAddress;

    //发件人账户名
    @Value("${email.sender.address}")
    public String senderAccount;

    //发件人账户密码
    @Value("${email.sender.password}")
    public String senderPassword;




//    public static void main(String[] args) throws Exception {
//        boolean res = sendMail("914342085@qq.com", "测试主题", "你好");
//        System.out.println("res: " + res);
//
//    }

    public boolean sendMail(String recvEmail, String title, String content) {
        System.out.println("============= " + senderAddress + " : " + senderPassword);

        //1、连接邮件服务器的参数配置
        Properties props = new Properties();
        //设置用户的认证方式
        props.setProperty("mail.smtp.auth", "true");
        //设置传输协议
        props.setProperty("mail.transport.protocol", "smtp");
        //设置发件人的SMTP服务器地址
        props.setProperty("mail.smtp.host", "smtp.tom.com");
        //2、创建定义整个应用程序所需的环境信息的 Session 对象
        try {
            Session session = Session.getInstance(props);

            //设置调试信息在控制台打印出来
            session.setDebug(true);
            //3、创建邮件的实例对象
            Message msg = getMimeMessage(session, recvEmail, title, content);
            //4、根据session对象获取邮件传输对象Transport
            Transport transport = session.getTransport();
            //设置发件人的账户名和密码
            System.out.println(senderAccount + ":" + senderPassword);
            transport.connect(senderAccount, senderPassword);
            //发送邮件，并发送到所有收件人地址，message.getAllRecipients() 获取到的是在创建邮件对象时添加的所有收件人, 抄送人, 密送人
            transport.sendMessage(msg,msg.getAllRecipients());

            //如果只想发送给指定的人，可以如下写法
            //transport.sendMessage(msg, new Address[]{new InternetAddress("xxx@qq.com")});

            //5、关闭邮件连接
            transport.close();
        } catch (Exception exception) {
            return false;
        }

        return true;
    }

    /**
     * 获得创建一封邮件的实例对象
     * @param session
     * @return
     * @throws MessagingException
     * @throws AddressException
     */
    public MimeMessage getMimeMessage(Session session, String recipientAddress, String title, String content) throws Exception{
        //创建一封邮件的实例对象
        MimeMessage msg = new MimeMessage(session);
        //设置发件人地址
        msg.setFrom(new InternetAddress(senderAddress));
        /**
         * 设置收件人地址（可以增加多个收件人、抄送、密送），即下面这一行代码书写多行
         * MimeMessage.RecipientType.TO:发送
         * MimeMessage.RecipientType.CC：抄送
         * MimeMessage.RecipientType.BCC：密送
         */
        msg.setRecipient(MimeMessage.RecipientType.TO,new InternetAddress(recipientAddress));
        msg.addRecipients(MimeMessage.RecipientType.CC, InternetAddress.parse(senderAddress));
        //设置邮件主题
        msg.setSubject(title,"UTF-8");
        //设置邮件正文
        msg.setContent(content, "text/html;charset=UTF-8");
        //设置邮件的发送时间,默认立即发送
        msg.setSentDate(new Date());

        return msg;
    }

}